LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Need a good picture of a stock LT1 combustion chamber

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Old 04-14-2011, 10:37 AM
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Default Need a good picture of a stock LT1 combustion chamber

Pulled the heads and found some interesting grinding in the combustion chambers. Can someone please point me to a good clear picture of what they looked like before the butchery?

This is the engine that ate the cam.

Found scratches in some of the cylinders. I'm going to clean the carbon off the top and pull the pistons today if I have time. Any info on the max piston to wall clearance I can run with stock pistons? I'd like to hone it and stick it back together with new rings and bearings. So far the crank looks good. Doesn't look like much metal got through the filter.

Also, the rear four cylinders appear to be running richer than the front four. This has to be telling me something?

Al

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Old 04-14-2011, 10:17 PM
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Old 04-15-2011, 02:01 AM
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Thanks, I'll post pictures of mine.

Al
Old 04-15-2011, 04:51 PM
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If I did it right, here are the pictures. Comments please.

Al 95 Z28
Attached Thumbnails Need a good picture of a stock LT1 combustion chamber-my-lt1-combustion-chamber-1.jpg   Need a good picture of a stock LT1 combustion chamber-my-lt1-combustion-chamber-2.jpg  
Old 04-16-2011, 12:18 AM
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looks fine to me...
Old 04-18-2011, 07:12 PM
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Just found the valves are 2.02 and 1.6 inches. The seats appear to be stock. I'm going to remove all the valves and take the whole mess to a shop to get an opinion. Almost looks like the valves are too big for the seats.

Al



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